[INFO] cloning repository https://github.com/nyoxon/new_linear_algebra
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nyoxon/new_linear_algebra" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyoxon%2Fnew_linear_algebra", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyoxon%2Fnew_linear_algebra'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5fffa807a243965b3a3bda0dd52b4430004bd33f
[INFO] checking nyoxon/new_linear_algebra against master#b56aaec52bc0fa35591a872fb4aac81f606e265c for pr-122661-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnyoxon%2Fnew_linear_algebra" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nyoxon/new_linear_algebra
[INFO] finished tweaking git repo https://github.com/nyoxon/new_linear_algebra
[INFO] tweaked toml for git repo https://github.com/nyoxon/new_linear_algebra written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nyoxon/new_linear_algebra on toolchain b56aaec52bc0fa35591a872fb4aac81f606e265c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nyoxon/new_linear_algebra already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4cb126966c8fd686e9521704e047a4c2c0e4a6138d0d49985e52827dd92f85f
[INFO] running `Command { std: "docker" "start" "-a" "a4cb126966c8fd686e9521704e047a4c2c0e4a6138d0d49985e52827dd92f85f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4cb126966c8fd686e9521704e047a4c2c0e4a6138d0d49985e52827dd92f85f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4cb126966c8fd686e9521704e047a4c2c0e4a6138d0d49985e52827dd92f85f", kill_on_drop: false }`
[INFO] [stdout] a4cb126966c8fd686e9521704e047a4c2c0e4a6138d0d49985e52827dd92f85f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+b56aaec52bc0fa35591a872fb4aac81f606e265c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 818a9bfc8c6de6bbc921bc64cc7de99730b77770cc864a07476fd595deee5a14
[INFO] running `Command { std: "docker" "start" "-a" "818a9bfc8c6de6bbc921bc64cc7de99730b77770cc864a07476fd595deee5a14", kill_on_drop: false }`
[INFO] [stderr]     Checking matrices v0.1.0 (/opt/rustwide/workdir/matrices)
[INFO] [stderr]     Checking vectors v0.1.0 (/opt/rustwide/workdir/vectors)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> matrices/src/matrix/core.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         &self,
[INFO] [stdout]    |         ^^^^^ the lifetime is elided here
[INFO] [stdout] 14 |         j: usize
[INFO] [stdout] 15 |     ) -> Option<ColumnView>
[INFO] [stdout]    |                 ---------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 15 |     ) -> Option<ColumnView<'_>>
[INFO] [stdout]    |                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> matrices/src/matrix/core.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |         &self,
[INFO] [stdout]    |         ^^^^^ the lifetime is elided here
[INFO] [stdout] 14 |         j: usize
[INFO] [stdout] 15 |     ) -> Option<ColumnView>
[INFO] [stdout]    |                 ---------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 15 |     ) -> Option<ColumnView<'_>>
[INFO] [stdout]    |                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> matrices/src/matrix/core.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         &mut self,
[INFO] [stdout]    |         ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 30 |         j: usize,
[INFO] [stdout] 31 |     ) -> Option<ColumnViewMut>
[INFO] [stdout]    |                 ------------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 31 |     ) -> Option<ColumnViewMut<'_>>
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> matrices/src/matrix/core.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         &mut self,
[INFO] [stdout]    |         ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 30 |         j: usize,
[INFO] [stdout] 31 |     ) -> Option<ColumnViewMut>
[INFO] [stdout]    |                 ------------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 31 |     ) -> Option<ColumnViewMut<'_>>
[INFO] [stdout]    |                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> matrices/src/matrix/core.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         &self,
[INFO] [stdout]    |         ^^^^^ the lifetime is elided here
[INFO] [stdout] 46 |         i: usize,
[INFO] [stdout] 47 |     ) -> Option<RowView>
[INFO] [stdout]    |                 ------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 47 |     ) -> Option<RowView<'_>>
[INFO] [stdout]    |                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> matrices/src/matrix/core.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         &self,
[INFO] [stdout]    |         ^^^^^ the lifetime is elided here
[INFO] [stdout] 46 |         i: usize,
[INFO] [stdout] 47 |     ) -> Option<RowView>
[INFO] [stdout]    |                 ------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 47 |     ) -> Option<RowView<'_>>
[INFO] [stdout]    |                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> matrices/src/matrix/core.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         &mut self,
[INFO] [stdout]    |         ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 62 |         i: usize,
[INFO] [stdout] 63 |     ) -> Option<RowViewMut>
[INFO] [stdout]    |                 ---------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 63 |     ) -> Option<RowViewMut<'_>>
[INFO] [stdout]    |                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> matrices/src/matrix/core.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         &mut self,
[INFO] [stdout]    |         ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 62 |         i: usize,
[INFO] [stdout] 63 |     ) -> Option<RowViewMut>
[INFO] [stdout]    |                 ---------- the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 63 |     ) -> Option<RowViewMut<'_>>
[INFO] [stdout]    |                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking working v0.1.0 (/opt/rustwide/workdir/working)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "818a9bfc8c6de6bbc921bc64cc7de99730b77770cc864a07476fd595deee5a14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "818a9bfc8c6de6bbc921bc64cc7de99730b77770cc864a07476fd595deee5a14", kill_on_drop: false }`
[INFO] [stdout] 818a9bfc8c6de6bbc921bc64cc7de99730b77770cc864a07476fd595deee5a14